Guinea Pig Care for Beginners

Quick answer

Guinea pigs are sociable, chatty herbivores. Keep them in pairs or small groups, in a roomy enclosure with plenty of places to hide. Most of what they eat should be hay, with fresh vegetables and a guinea-pig pellet on top, and they need vitamin C every day because their bodies can't make it. Well looked after, they live around 5 to 7 years.

Why guinea pigs make good pets

Guinea pigs (cavies) are generally gentle and rarely bite. They're also awake during the day, so they're easier to enjoy than hamsters, which are active at night. They talk all the time in squeaks, purrs and rumbles. On the other hand, they need care every day, and as prey animals they can be skittish. Patience goes a long way.

Company: never just one

Guinea pigs are herd animals. Kept alone, they can become stressed and withdrawn. Pairings that tend to work:

• Two or more females (sows).
• Two males (boars), ideally littermates or introduced carefully with enough space.
• A neutered male with one or more females.

Introduce newcomers gradually, on neutral ground. A bit of rumbling, chasing and mounting is normal while they work out who's in charge. Real fighting, with bites or blood, means you separate them and get advice.

Housing

Most cages sold in shops are too small. Many welfare organisations suggest at least around 0.7 m² (7.5 sq ft) for a pair, roughly 120 cm × 60 cm (4 ft × 2 ft), with more for bigger groups and as much time out on the floor as you can give. Floor area matters to guinea pigs far more than height. They are poor climbers, so keep ramps gentle; multi-level cages don't add much.

Setup checklist

• Solid floor with soft bedding: paper-based bedding, fleece liners over an absorbent layer, or dust-extracted wood shavings (avoid cedar and pine).
• Hides: at least one per guinea pig, with two exits so one cannot trap another.
• Hay rack or hay pile in more than one spot.
• Heavy food bowls that cannot tip, and water in a bottle or bowl.
• Toys and enrichment: tunnels, cardboard boxes, paper bags, safe chews.

House them indoors or in a well-protected, predator-proof outdoor hutch. Heat is a real danger: guinea pigs can get heatstroke above roughly 26 °C (79 °F). They don't like cold and damp either. Around 17–23 °C (63–73 °F) is comfortable. Keep them out of direct sun and draughts.

Diet

Vitamin C

Your guinea pigs need vitamin C from somewhere every day. Bell peppers (red and green especially), kale, parsley, coriander, broccoli and Brussels sprouts are all good sources. Guinea pig pellets are fortified, but the vitamin breaks down over time, so check the date and keep the bag sealed. Drops added to the water are generally less reliable: the vitamin degrades fast and the taste can put guinea pigs off drinking. If you think yours needs a supplement, ask your vet.

Rabbit food won't do, as it doesn't have the right vitamin C levels. Keep them off iceberg lettuce, potatoes, onions, garlic, chocolate and bread, and avoid seed or muesli-style mixes with hard pieces.

Bring in new vegetables slowly, one at a time, so you don't upset their stomachs.

Handling

Give new guinea pigs a few days to settle. Then:

1. Approach calmly from the side, talking softly.
2. Slide one hand under the chest behind the front legs.
3. Support the rear end with the other hand as you lift.
4. Hold close to your body, or sit on the floor with a towel on your lap.

Never pick one up by the scruff or let the back end hang. Guinea pigs can leap without warning and falls hurt them easily, so young children should sit on the floor when they hold one.

Grooming and routine care

Short-haired guinea pigs only need the odd brush. Long-haired breeds such as Peruvians and Silkies are a different matter: brush them daily and trim regularly around the rear end. Nails usually need cutting every few weeks; ask a vet to show you how to avoid the quick.

Their teeth never stop growing, as in rabbits, and plenty of hay is what keeps them worn down. Weigh each guinea pig weekly, because a steady drop in weight is an early warning. Spot-clean the enclosure daily and give it a full clean once a week.

Health warning signs

Guinea pigs hide illness, so act early. Contact a vet with small-mammal experience if you see:

• Not eating, or fewer or no droppings. This is urgent in guinea pigs, as it is in rabbits; see our guide to GI stasis in rabbits for why gut slowdown is dangerous in herbivores.
• Laboured breathing, wheezing, sneezing, or discharge from eyes or nose. Respiratory infections can progress quickly.
• Diarrhoea or a dirty rear.
• Hair loss, intense scratching or scabs, which can indicate mites or fungal infection.
• Drooling, weight loss or difficulty chewing (possible dental problems).
• Limping, swollen joints or reluctance to move (possible vitamin C deficiency).
• Blood in the urine or straining to urinate.
• Lethargy or a hunched, fluffed-up posture.

A simple daily routine

• Morning: refresh hay and water, check everyone is eating and moving normally.
• Evening: feed fresh vegetables, spot-clean, have a short handling session.
• Weekly: weigh, check nails, teeth, coat and skin, full clean.

For a side-by-side look at rabbits, guinea pigs and hamsters, see our Small Pets Guide. If you're ready to bring home a pair, you can browse small pets from verified sellers on Paalo.